New Horizons has found another surprise (well, set of surprises) on Jupiter’s moon Io: a honkin’ great volcano, dropping debris across a field nearly 300km wide.
If this was scaled to Earth, you could imagine a volcano near Alice Springs chucking rocks into the water off Perth, Broome, Cairns, Sydney & Adelaide — at the same time.
You can also see (at 9 o’clock) the 60km plume from Prometheus & (at 6 o’clock, foreground) the ca 150km plume from Masubi.
That’s a busy little moon! One has to wonder how often it resurfaces itself.